Refrigeration



April 1939- s. M. BAcKsTRoM 2,154,258

REFRIGERATION Filed April 16, 1935 3 SheetsSheet l [a ATTORNEY.

A ril 11, 1939.

s. BAcKsTROM REFRIGERATION Filed April 16, 1955 3 Sheets-Sheet 2 INVENTOR -%M2raz;; M

4;. ATTORNEY.

April 11, 1939. s. M. BAcKSTROM REFRIGERATION Filed April 16, 1935 3 Sheets-Sheet 3 :ATTORNEY.

INVENTOR, M

Patented Apr. 11, 1939 UNITED STATES REFRIGERATION Sigurd Mattias Bickstriim, Stockholm, Sweden, ignor, by mesne assignments, to Serve],

Inc., Dover, Del a corporation of Delaware AppllcationAprll 16, 1935, Serial No.

In Germany April 19, 1934 9 Claims. (01. 62-116) My invention relates to refrigerators and more particularly to themounting of refrigerator units in cabinets.

The object of my invention is to provide a construction and arrangement whereby a unit is readily mounted in a cabinet, readily removed therefrom, and in which the mounting means is also a strengthening means with respect to the unit as such.'

The nature-and advantages of my invention will become apparent from the following description taken in conjunction with the accompanying drawings forming a part of this specification, and

of which:

Fig. 1 is a vertical cross-sectional view through a refrigerator embodying the invention, the refrigerating unit being omitted;

Fig. 2 is a side view of a refrigerating unit which is mountable in the cabinet shown in- Fig. 1;

Fig. 3 is a back or rear view of the unit; and Fig. 4 is a sectional view taken on the line 4--4 of Fig. 1, showing'the manner of mounting the unit in the cabinet and of holding the parts together.

The refrigerator cabinet includes insulated walls 10 which together with a door ll form a food space 12 to be refrigerated. The rear wall l3 of the food space is apertured at 14 to provide an opening or window through which a part of the unit is inserted, after which the opening is closed by a wall section 15 shown in Figs. 2 and 4. Behind the wall 13 is anapparatus compartment 16 formed by the rearward portions of the refrigerator top 19 and side plates 2|. The top 19 is provided with an aperture 22 above the apparatus compartment 16 for permitting upward flow of air through the apparatus compartment. The back of the apparatus compartment I 6 may be open or formed by a removable grille.

The unit includes an'evaporator 25 which, on assembly of the unit and the cabinet, is situated within the food space 12 as shown in dotted lines in Fig. 1. The evaporator is connected to a heat exchanger 26 which is connected by means of conduits 21 and 28 to an absorber coil 30 and absorber tank or vessel 31.

The absorber is connected 'through a liquid heat exchanger 32 to a generator 33 which is heated in any suitable manneig'as by a gas flame. The generator is connected by means of a conduit 34 for conducting vapor to a condenser 35 which, on assembly, is

understood, however, that the invention is not limited to anyparticular type of refrigerating unit.

.gas circuit. Attached to the pressure vessel on one side is an angle iron 31 which extends vertically downwardly to approximately the lower end of the unit. To this is welded an obliquely disposed angle iron 38, in turn welded to a bottom horizontal angle iron 39. The angle iron 39 is welded to a vertical angle iron 40, the upper end of which is in turn welded to a cross angle iron 4|, in turn welded to a side vertical angle iron 42 at the side of the unit opposite the angle 31. A cross angle iron 43 connects the bottom of angle iron 42 with the angle iron 40. Thus, the two sides and the bottom of the unit are supported by a substantially U-shaped angle iron structure and the upper part of the structure'is reenforced by the attachment to the angle iron structure of the substantially horizontally disposed pressure vessel. 36. Additional angle irons 44, 45 may be provided to give further stifiening to the unit structure.

Within the apparatus compartment at each side thereof' are projections formed by vertical angle irons 46 and 41 securely fixed to the back plate l1 of the insulated structure. The angles 46 and "face each other and the rearwardly extending flanges thereof are spaced apart sufficiently to allow the rearwardly extending flanges of the angles 31 and 42 to slip within or telescope with the respective flanges of angles 46 and 41, so that the outer cornersor heels. of the angles 31 and 42 fit within the inner corners or valleys of the angles and 41. The pressure vessel 36 is arranged on the forward side of the angles 31 and 42 and slipsinto a triangular recess 49 at the upper part of the insulated cabinet structure so that it is out of the path of flow of air for cooling the condenser 35 and therefore does not restrict the air flow nor increase the depth of the refrigerator.

The angles 46 and 41 form a supporting and positioning means for the unit and the rigid unit structure is slipped into. the guideway or space formed by these angles 46 and 41. The parts may be secured together by screws 56 which may pass through either of the parallel flanges. Obviously other means maybe used for securing the complementary angle irons together.

What I claim is: 1. In arefrigerator, a cabinet providing a comsecure the frame in the cabinet, and absorption type refrigeration apparatus mounted on said frame and including a condenser and a pressure vessel on opposite sides of the frame, said wall structure having a recess adapted to receive said pressure vessel, the latter being located inwardly from said condenser and out of the path of flow ofv air for cooling the condenser so as not to restrict the air flow. I

2. In a refrigerator, a cabinet providing a compartment having thermally insulated wall structure, an upright frame,'and absorption type, re-

frigeration apparatus mounted on said'frame' and including a condenser and a pressure vessel on opposite sides of the frame, said apparatus being constructed and arranged so that it may be mounted in said cabinet with said frame secured to an outer surface of said wall structure, and said wall structure having a recess adapted to receive said pressure vessel,. the latter being located inwardly from said condenser and out of the path of flow of air for cooling the condenser so as not to restrict the air flow.

3. In a refrigerator, a cabinet providing a compartment having thermally insulated wall structure, and absorption type refrigeration apparatus including a condenser and a'pressure vessel, said apparatus being constructed and-arranged so that it may be mounted in said cabinet with said condenser and pressure vessel located exteriorly of said wall structure, and said wall structure having a recess adapted to receive said pressure vessel, the latter being located inwardly from said condenser and out of the path of flow of air for cooling the condenser so as not to restrict the air flow.

4. In a refrigerator, a cabinet, angle members forming a part of said cabinet, a refrigerating unit, and angle members forming a part of said refrigerating unit, said angle members on said cabinet forming a supporting and. positioning means for said refrigerating unit with said angle members being so arranged that the outer corners or heels of said angle members on said unit fit into theinner corners or valleys of said angle members on said cabinet and are separable from the latter.

5. A refrigerator comprising thermally insulated walls forming a storage space and spaced side walls projecting beyond one of said insulated walls to provide a vertically elongated apparatus space, spaced vertically extending angle members fixed to said cabinet at the outside of said insulated wall beyond which said sidewalls project, a refrigerating unit, and angle members on said unit spaced substantially as the angle members fixed to said cabinet said angle members on said cabinet forming a supporting and positioning means for said refrigerating unit with said' angle members being so arranged that the outer corners or heels of said angle members on said unit fltinto the inner corners'or' valleys of. said members fixed to said cabinet and are separable from the latter, whereby the angle members on said unit may be brought into telescopic relation with the angle members fixed to the outside of said insulated wall.

6. In a refrigerator, a cabinet, spaced angle members forming a part of said cabinet, a refrigerating unit, angle members on said refrigerating unit spaced substantially as the angle members on said cabinet, .said angle members on said 5 cabinet forming a supporting and positioning means for said refrigerating unit with saidangle members being so arranged that the outer corners or heels of said angle members on said unit fit into the inner corners or valleys of said angle 10 members on said cabinet and are separable from the latter, andmeans for removably securing said angle member together.

7. In a refrigerator, a cabinet wall having horizontally spaced, outwardly projecting angle mem- 15 bers having flanges providing surfaces in substantially parallel planes perpendicular to said wall, a refrigerating unit having projecting angle members spaced apart substantially the same distance as said angle members on the cabinet 2Q wall and also having flanges providing surfaces in parallel planes whereby said unit may be guided into position on the outside of the side wall thereof having said outwardly extending flanges, the outer corners or heels of. said unit angle members sliding and fitting in the inner corners or valleys of said cabinet angle members and the former being separable from the latter, and means for removably securing said unit angle members to said cabinet angle members to 3 secure the unit in place.

8. In a refrigerator including a cabinet, spaced angle members forming a part of said cabinet and having flanges extending outwardly from a side of said cabinet in substantially parallel. i

' planes perpendicular to said side, a refrigerating unit"having projecting angle members spaced apart the same distance as said cabinet angle members and also having flanges providing surfaces in parallel planes whereby said unit maybe gu ded into position directly against the outside of'the side wall of the cabinet having said outwardly extending flanges, said unit angle members fitting entirely in the space between said outwardly extending parallel flanges 6n said .cabinet and said parallel flanges on said unit slidably and telescopically fitting between the parallel flanges on said cabinet and being separable therefrom, and means for removably' securing said unit angle members in position between said cabinet angle members to secure the unit in place.

9. In a refrigerator having thermally insulated walls defining a storage space with one of the side walls having an aperture and spaced side. walls projecting beyond the insulated wall having the aperture'to provide an open side on the cabinet, the open side of the cabinet including vertically extending right angle flanges, a rigid refrigerating unit including an evaporator for cooling and vertically extending right angle flanges, said cabinet right angle flanges forming a positioning and guiding means for said refrigerating unit with the right angle flanges being so arranged and spaced that the outer corners or, heels of the unit right angle flanges fit into the inner corners or valleys of the cabinet right angle flanges, and are separable from the latter, and said-evaporator being adapted to flt in said aperturefor cooling said. space when the unit and cabinet rightsangle flanges are in intere fitting relation. a

SIGURD MATTIAS Bi'icKsmoM. 

